View source for 3bn4

==Carboxysome Subunit, CcmK1==
<StructureSection load='3bn4' size='340' side='right' caption='[[3bn4]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3bn4]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Synechocystis_sp. Synechocystis sp.]. The June 2009 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Vaults''  by David Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2009_6 10.2210/rcsb_pdb/mom_2009_6]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BN4 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3BN4 FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene><br>
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2qzm|2qzm]]</td></tr>
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ccmK1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1143 Synechocystis sp.])</td></tr>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3bn4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bn4 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3bn4 RCSB], [http://www.ebi.ac.uk/pdbsum/3bn4 PDBsum]</span></td></tr>
<table>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bn/3bn4_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
<div style="clear:both"></div>
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== Publication Abstract from PubMed ==
The carboxysome is a bacterial microcompartment that functions as a simple organelle by sequestering enzymes involved in carbon fixation. The carboxysome shell is roughly 800 to 1400 angstroms in diameter and is assembled from several thousand protein subunits. Previous studies have revealed the three-dimensional structures of hexameric carboxysome shell proteins, which self-assemble into molecular layers that most likely constitute the facets of the polyhedral shell. Here, we report the three-dimensional structures of two proteins of previously unknown function, CcmL and OrfA (or CsoS4A), from the two known classes of carboxysomes, at resolutions of 2.4 and 2.15 angstroms. Both proteins assemble to form pentameric structures whose size and shape are compatible with formation of vertices in an icosahedral shell. Combining these pentamers with the hexamers previously elucidated gives two plausible, preliminary atomic models for the carboxysome shell.

Atomic-level models of the bacterial carboxysome shell.,Tanaka S, Kerfeld CA, Sawaya MR, Cai F, Heinhorst S, Cannon GC, Yeates TO Science. 2008 Feb 22;319(5866):1083-6. PMID:18292340<ref>PMID:18292340</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>

==See Also==
*[[Teaching Scenes%2C Tutorials%2C and Educators' Pages|Teaching Scenes%2C Tutorials%2C and Educators' Pages]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: RCSB PDB Molecule of the Month]]
[[Category: Synechocystis sp.]]
[[Category: Vaults]]
[[Category: Sawaya, M R.]]
[[Category: Tanaka, S.]]
[[Category: Yeates, T O.]]
[[Category: Hexamer]]
[[Category: Structural protein]]